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org.eclipse.jdt.internal.formatter.SpacePreparator Maven / Gradle / Ivy
/*******************************************************************************
* Copyright (c) 2014, 2016 Mateusz Matela and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Mateusz Matela - [formatter] Formatter does not format Java code correctly, especially when max line width is set - https://bugs.eclipse.org/303519
* Mateusz Matela - [formatter] IndexOutOfBoundsException in TokenManager - https://bugs.eclipse.org/462945
* Mateusz Matela - [formatter] follow up bug for comments - https://bugs.eclipse.org/458208
*******************************************************************************/
package org.eclipse.jdt.internal.formatter;
import static org.eclipse.jdt.internal.compiler.parser.TerminalTokens.*;
import java.util.List;
import org.eclipse.jdt.core.dom.ASTNode;
import org.eclipse.jdt.core.dom.ASTVisitor;
import org.eclipse.jdt.core.dom.Annotation;
import org.eclipse.jdt.core.dom.AnnotationTypeDeclaration;
import org.eclipse.jdt.core.dom.AnnotationTypeMemberDeclaration;
import org.eclipse.jdt.core.dom.AnonymousClassDeclaration;
import org.eclipse.jdt.core.dom.ArrayAccess;
import org.eclipse.jdt.core.dom.ArrayCreation;
import org.eclipse.jdt.core.dom.ArrayInitializer;
import org.eclipse.jdt.core.dom.ArrayType;
import org.eclipse.jdt.core.dom.AssertStatement;
import org.eclipse.jdt.core.dom.Assignment;
import org.eclipse.jdt.core.dom.Block;
import org.eclipse.jdt.core.dom.CastExpression;
import org.eclipse.jdt.core.dom.CatchClause;
import org.eclipse.jdt.core.dom.ClassInstanceCreation;
import org.eclipse.jdt.core.dom.ConditionalExpression;
import org.eclipse.jdt.core.dom.ConstructorInvocation;
import org.eclipse.jdt.core.dom.CreationReference;
import org.eclipse.jdt.core.dom.Dimension;
import org.eclipse.jdt.core.dom.DoStatement;
import org.eclipse.jdt.core.dom.EnhancedForStatement;
import org.eclipse.jdt.core.dom.EnumConstantDeclaration;
import org.eclipse.jdt.core.dom.EnumDeclaration;
import org.eclipse.jdt.core.dom.Expression;
import org.eclipse.jdt.core.dom.ExpressionMethodReference;
import org.eclipse.jdt.core.dom.ExpressionStatement;
import org.eclipse.jdt.core.dom.FieldDeclaration;
import org.eclipse.jdt.core.dom.ForStatement;
import org.eclipse.jdt.core.dom.IfStatement;
import org.eclipse.jdt.core.dom.ImportDeclaration;
import org.eclipse.jdt.core.dom.InfixExpression;
import org.eclipse.jdt.core.dom.InstanceofExpression;
import org.eclipse.jdt.core.dom.IntersectionType;
import org.eclipse.jdt.core.dom.LabeledStatement;
import org.eclipse.jdt.core.dom.LambdaExpression;
import org.eclipse.jdt.core.dom.MarkerAnnotation;
import org.eclipse.jdt.core.dom.MemberValuePair;
import org.eclipse.jdt.core.dom.MethodDeclaration;
import org.eclipse.jdt.core.dom.MethodInvocation;
import org.eclipse.jdt.core.dom.NormalAnnotation;
import org.eclipse.jdt.core.dom.PackageDeclaration;
import org.eclipse.jdt.core.dom.ParameterizedType;
import org.eclipse.jdt.core.dom.ParenthesizedExpression;
import org.eclipse.jdt.core.dom.PostfixExpression;
import org.eclipse.jdt.core.dom.PrefixExpression;
import org.eclipse.jdt.core.dom.PrefixExpression.Operator;
import org.eclipse.jdt.core.dom.ReturnStatement;
import org.eclipse.jdt.core.dom.SingleMemberAnnotation;
import org.eclipse.jdt.core.dom.SingleVariableDeclaration;
import org.eclipse.jdt.core.dom.Statement;
import org.eclipse.jdt.core.dom.SuperConstructorInvocation;
import org.eclipse.jdt.core.dom.SuperMethodInvocation;
import org.eclipse.jdt.core.dom.SuperMethodReference;
import org.eclipse.jdt.core.dom.SwitchCase;
import org.eclipse.jdt.core.dom.SwitchStatement;
import org.eclipse.jdt.core.dom.SynchronizedStatement;
import org.eclipse.jdt.core.dom.ThrowStatement;
import org.eclipse.jdt.core.dom.TryStatement;
import org.eclipse.jdt.core.dom.Type;
import org.eclipse.jdt.core.dom.TypeDeclaration;
import org.eclipse.jdt.core.dom.TypeMethodReference;
import org.eclipse.jdt.core.dom.TypeParameter;
import org.eclipse.jdt.core.dom.UnionType;
import org.eclipse.jdt.core.dom.VariableDeclaration;
import org.eclipse.jdt.core.dom.VariableDeclarationExpression;
import org.eclipse.jdt.core.dom.VariableDeclarationFragment;
import org.eclipse.jdt.core.dom.VariableDeclarationStatement;
import org.eclipse.jdt.core.dom.WhileStatement;
import org.eclipse.jdt.core.dom.WildcardType;
import org.eclipse.jdt.internal.compiler.parser.ScannerHelper;
public class SpacePreparator extends ASTVisitor {
TokenManager tm;
private DefaultCodeFormatterOptions options;
public SpacePreparator(TokenManager tokenManager, DefaultCodeFormatterOptions options) {
this.tm = tokenManager;
this.options = options;
}
@Override
public boolean preVisit2(ASTNode node) {
boolean isMalformed = (node.getFlags() & ASTNode.MALFORMED) != 0;
return !isMalformed;
}
@Override
public boolean visit(PackageDeclaration node) {
handleSemicolon(node);
return true;
}
@Override
public boolean visit(ImportDeclaration node) {
handleSemicolon(node);
return true;
}
@Override
public boolean visit(TypeDeclaration node) {
if (node.getName().getStartPosition() == -1)
return true; // this is a fake type created by parsing in class body mode
handleToken(node.getName(), TokenNameIdentifier, true, false);
List typeParameters = node.typeParameters();
handleTypeParameters(typeParameters);
if (!node.isInterface() && !node.superInterfaceTypes().isEmpty()) {
// fix for: class A extends ArrayListimplements Callable
handleToken(node.getName(), TokenNameimplements, true, false);
}
handleToken(node.getName(), TokenNameLBRACE,
this.options.insert_space_before_opening_brace_in_type_declaration, false);
handleCommas(node.superInterfaceTypes(), this.options.insert_space_before_comma_in_superinterfaces,
this.options.insert_space_after_comma_in_superinterfaces);
return true;
}
@Override
public boolean visit(EnumDeclaration node) {
handleToken(node.getName(), TokenNameLBRACE,
this.options.insert_space_before_opening_brace_in_enum_declaration, false);
handleCommas(node.superInterfaceTypes(), this.options.insert_space_before_comma_in_superinterfaces,
this.options.insert_space_after_comma_in_superinterfaces);
handleCommas(node.enumConstants(), this.options.insert_space_before_comma_in_enum_declarations,
this.options.insert_space_after_comma_in_enum_declarations);
return true;
}
@Override
public boolean visit(EnumConstantDeclaration node) {
List arguments = node.arguments();
Token openingParen = null;
if (!arguments.isEmpty()) {
openingParen = this.tm.firstTokenIn(node, TokenNameLPAREN);
if (this.options.insert_space_after_opening_paren_in_enum_constant)
openingParen.spaceAfter();
handleTokenAfter(arguments.get(arguments.size() - 1), TokenNameRPAREN,
this.options.insert_space_before_closing_paren_in_enum_constant, false);
} else {
// look for empty parenthesis, may not be there
int from = this.tm.firstIndexIn(node.getName(), TokenNameIdentifier) + 1;
AnonymousClassDeclaration classDeclaration = node.getAnonymousClassDeclaration();
int to = classDeclaration != null ? this.tm.firstIndexBefore(classDeclaration, -1)
: this.tm.lastIndexIn(node, -1);
for (int i = from; i <= to; i++) {
if (this.tm.get(i).tokenType == TokenNameLPAREN) {
openingParen = this.tm.get(i);
if (this.options.insert_space_between_empty_parens_in_enum_constant)
openingParen.spaceAfter();
break;
}
}
}
if (openingParen != null && this.options.insert_space_before_opening_paren_in_enum_constant)
openingParen.spaceBefore();
handleCommas(arguments, this.options.insert_space_before_comma_in_enum_constant_arguments,
this.options.insert_space_after_comma_in_enum_constant_arguments);
return true;
}
@Override
public boolean visit(AnonymousClassDeclaration node) {
boolean spaceBeforeOpenBrace = this.options.insert_space_before_opening_brace_in_anonymous_type_declaration;
if (node.getParent() instanceof EnumConstantDeclaration)
spaceBeforeOpenBrace = this.options.insert_space_before_opening_brace_in_enum_constant;
handleToken(node, TokenNameLBRACE, spaceBeforeOpenBrace, false);
return true;
}
@Override
public boolean visit(MethodDeclaration node) {
handleToken(node.getName(), TokenNameIdentifier, true, false);
boolean spaceBeforeOpenParen = node.isConstructor()
? this.options.insert_space_before_opening_paren_in_constructor_declaration
: this.options.insert_space_before_opening_paren_in_method_declaration;
boolean spaceAfterOpenParen = node.isConstructor()
? this.options.insert_space_after_opening_paren_in_constructor_declaration
: this.options.insert_space_after_opening_paren_in_method_declaration;
boolean spaceBetweenEmptyParens = node.isConstructor()
? this.options.insert_space_between_empty_parens_in_constructor_declaration
: this.options.insert_space_between_empty_parens_in_method_declaration;
if (handleEmptyParens(node.getName(), spaceBetweenEmptyParens)) {
handleToken(node.getName(), TokenNameLPAREN, spaceBeforeOpenParen, false);
} else {
handleToken(node.getName(), TokenNameLPAREN, spaceBeforeOpenParen, spaceAfterOpenParen);
boolean spaceBeforeCloseParen = node.isConstructor()
? this.options.insert_space_before_closing_paren_in_constructor_declaration
: this.options.insert_space_before_closing_paren_in_method_declaration;
if (spaceBeforeCloseParen) {
List params = node.parameters();
ASTNode beforeBrace = params.isEmpty() ? node.getName() : params.get(params.size() - 1);
handleTokenAfter(beforeBrace, TokenNameRPAREN, true, false);
}
}
if ((node.isConstructor() ? this.options.insert_space_before_opening_brace_in_constructor_declaration
: this.options.insert_space_before_opening_brace_in_method_declaration) && node.getBody() != null)
this.tm.firstTokenIn(node.getBody(), TokenNameLBRACE).spaceBefore();
boolean beforeComma = node.isConstructor()
? this.options.insert_space_before_comma_in_constructor_declaration_parameters
: this.options.insert_space_before_comma_in_method_declaration_parameters;
boolean afterComma = node.isConstructor()
? this.options.insert_space_after_comma_in_constructor_declaration_parameters
: this.options.insert_space_after_comma_in_method_declaration_parameters;
handleCommas(node.parameters(), beforeComma, afterComma);
List thrownExceptionTypes = node.thrownExceptionTypes();
if (!thrownExceptionTypes.isEmpty()) {
this.tm.firstTokenBefore(thrownExceptionTypes.get(0), TokenNamethrows).spaceBefore();
beforeComma = node.isConstructor()
? this.options.insert_space_before_comma_in_constructor_declaration_throws
: this.options.insert_space_before_comma_in_method_declaration_throws;
afterComma = node.isConstructor()
? this.options.insert_space_after_comma_in_constructor_declaration_throws
: this.options.insert_space_after_comma_in_method_declaration_throws;
handleCommas(thrownExceptionTypes, beforeComma, afterComma);
}
List typeParameters = node.typeParameters();
if (!typeParameters.isEmpty()) {
handleTypeParameters(typeParameters);
handleTokenBefore(typeParameters.get(0), TokenNameLESS, true, false);
handleTokenAfter(typeParameters.get(typeParameters.size() - 1), TokenNameGREATER, false, true);
}
handleSemicolon(node);
return true;
}
private void handleTypeParameters(List typeParameters) {
if (!typeParameters.isEmpty()) {
handleTokenBefore(typeParameters.get(0), TokenNameLESS,
this.options.insert_space_before_opening_angle_bracket_in_type_parameters,
this.options.insert_space_after_opening_angle_bracket_in_type_parameters);
handleTokenAfter(typeParameters.get(typeParameters.size() - 1), TokenNameGREATER,
this.options.insert_space_before_closing_angle_bracket_in_type_parameters,
this.options.insert_space_after_closing_angle_bracket_in_type_parameters);
handleCommas(typeParameters, this.options.insert_space_before_comma_in_type_parameters,
this.options.insert_space_after_comma_in_type_parameters);
}
}
@Override
public boolean visit(FieldDeclaration node) {
handleToken((ASTNode) node.fragments().get(0), TokenNameIdentifier, true, false);
handleCommas(node.fragments(), this.options.insert_space_before_comma_in_multiple_field_declarations,
this.options.insert_space_after_comma_in_multiple_field_declarations);
handleSemicolon(node);
return true;
}
@Override
public boolean visit(VariableDeclarationStatement node) {
handleToken((ASTNode) node.fragments().get(0), TokenNameIdentifier, true, false);
handleCommas(node.fragments(), this.options.insert_space_before_comma_in_multiple_local_declarations,
this.options.insert_space_after_comma_in_multiple_local_declarations);
return true;
}
@Override
public boolean visit(VariableDeclarationFragment node) {
if (node.getInitializer() != null) {
handleToken(node.getName(), TokenNameEQUAL, this.options.insert_space_before_assignment_operator,
this.options.insert_space_after_assignment_operator);
}
return true;
}
@Override
public void endVisit(SingleVariableDeclaration node) {
// this must be endVisit in case a space added by a visit on a child node needs to be cleared
if (node.isVarargs()) {
handleTokenBefore(node.getName(), TokenNameELLIPSIS, this.options.insert_space_before_ellipsis,
this.options.insert_space_after_ellipsis);
List varargsAnnotations = node.varargsAnnotations();
if (!varargsAnnotations.isEmpty()) {
this.tm.firstTokenIn(varargsAnnotations.get(0), TokenNameAT).spaceBefore();
this.tm.lastTokenIn(varargsAnnotations.get(varargsAnnotations.size() - 1), -1).clearSpaceAfter();
}
} else {
handleToken(node.getName(), TokenNameIdentifier, true, false);
}
}
@Override
public boolean visit(SwitchStatement node) {
handleToken(node, TokenNameLPAREN, this.options.insert_space_before_opening_paren_in_switch,
this.options.insert_space_after_opening_paren_in_switch);
handleTokenAfter(node.getExpression(), TokenNameRPAREN,
this.options.insert_space_before_closing_paren_in_switch, false);
handleTokenAfter(node.getExpression(), TokenNameLBRACE,
this.options.insert_space_before_opening_brace_in_switch, false);
handleSemicolon(node.statements());
return true;
}
@Override
public boolean visit(SwitchCase node) {
if (node.isDefault()) {
handleToken(node, TokenNameCOLON, this.options.insert_space_before_colon_in_default, false);
} else {
handleToken(node, TokenNamecase, false, true);
handleToken(node.getExpression(), TokenNameCOLON, this.options.insert_space_before_colon_in_case, false);
}
return true;
}
@Override
public boolean visit(DoStatement node) {
handleTokenBefore(node.getExpression(), TokenNameLPAREN,
this.options.insert_space_before_opening_paren_in_while,
this.options.insert_space_after_opening_paren_in_while);
handleTokenBefore(node.getExpression(), TokenNamewhile,
!(node.getBody() instanceof Block) || this.options.insert_space_after_closing_brace_in_block, false);
handleTokenAfter(node.getExpression(), TokenNameRPAREN,
this.options.insert_space_before_closing_paren_in_while, false);
return true;
}
@Override
public boolean visit(WhileStatement node) {
handleToken(node, TokenNameLPAREN, this.options.insert_space_before_opening_paren_in_while,
this.options.insert_space_after_opening_paren_in_while);
handleTokenBefore(node.getBody(), TokenNameRPAREN, this.options.insert_space_before_closing_paren_in_while,
false);
return true;
}
@Override
public boolean visit(SynchronizedStatement node) {
handleToken(node, TokenNameLPAREN, this.options.insert_space_before_opening_paren_in_synchronized,
this.options.insert_space_after_opening_paren_in_synchronized);
handleTokenBefore(node.getBody(), TokenNameRPAREN,
this.options.insert_space_before_closing_paren_in_synchronized, false);
return true;
}
@Override
public boolean visit(TryStatement node) {
List resources = node.resources();
if (!resources.isEmpty()) {
handleToken(node, TokenNameLPAREN, this.options.insert_space_before_opening_paren_in_try,
this.options.insert_space_after_opening_paren_in_try);
handleTokenBefore(node.getBody(), TokenNameRPAREN, this.options.insert_space_before_closing_paren_in_try,
false);
for (int i = 1; i < resources.size(); i++) {
handleTokenBefore(resources.get(i), TokenNameSEMICOLON,
this.options.insert_space_before_semicolon_in_try_resources,
this.options.insert_space_after_semicolon_in_try_resources);
}
// there can be a semicolon after the last resource
int index = this.tm.firstIndexAfter(resources.get(resources.size() - 1), -1);
while (index < this.tm.size()) {
Token token = this.tm.get(index++);
if (token.tokenType == TokenNameSEMICOLON) {
handleToken(token, this.options.insert_space_before_semicolon_in_try_resources, false);
} else if (token.tokenType == TokenNameRPAREN) {
break;
}
}
}
return true;
}
@Override
public boolean visit(CatchClause node) {
handleToken(node, TokenNameLPAREN, this.options.insert_space_before_opening_paren_in_catch,
this.options.insert_space_after_opening_paren_in_catch);
handleTokenBefore(node.getBody(), TokenNameRPAREN, this.options.insert_space_before_closing_paren_in_catch,
false);
return true;
}
@Override
public boolean visit(AssertStatement node) {
this.tm.firstTokenIn(node, TokenNameassert).spaceAfter();
if (node.getMessage() != null) {
handleTokenBefore(node.getMessage(), TokenNameCOLON, this.options.insert_space_before_colon_in_assert,
this.options.insert_space_after_colon_in_assert);
}
return true;
}
@Override
public boolean visit(ReturnStatement node) {
if (node.getExpression() != null) {
int returnTokenIndex = this.tm.firstIndexIn(node, TokenNamereturn);
if (!(node.getExpression() instanceof ParenthesizedExpression)
|| this.options.insert_space_before_parenthesized_expression_in_return) {
this.tm.get(returnTokenIndex).spaceAfter();
}
}
return true;
}
@Override
public boolean visit(ThrowStatement node) {
int returnTokenIndex = this.tm.firstIndexIn(node, TokenNamethrow);
if (this.tm.get(returnTokenIndex + 1).tokenType != TokenNameLPAREN
|| this.options.insert_space_before_parenthesized_expression_in_throw) {
this.tm.get(returnTokenIndex).spaceAfter();
}
return true;
}
@Override
public boolean visit(LabeledStatement node) {
handleToken(node, TokenNameCOLON, this.options.insert_space_before_colon_in_labeled_statement,
this.options.insert_space_after_colon_in_labeled_statement);
return true;
}
@Override
public boolean visit(AnnotationTypeDeclaration node) {
handleToken(node, TokenNameAT, this.options.insert_space_before_at_in_annotation_type_declaration,
this.options.insert_space_after_at_in_annotation_type_declaration);
handleToken(node.getName(), TokenNameLBRACE,
this.options.insert_space_before_opening_brace_in_annotation_type_declaration, false);
return true;
}
@Override
public boolean visit(AnnotationTypeMemberDeclaration node) {
handleToken(node.getName(), TokenNameIdentifier, true, false);
handleToken(node.getName(), TokenNameLPAREN,
this.options.insert_space_before_opening_paren_in_annotation_type_member_declaration, false);
handleEmptyParens(node.getName(),
this.options.insert_space_between_empty_parens_in_annotation_type_member_declaration);
if (node.getDefault() != null)
handleTokenBefore(node.getDefault(), TokenNamedefault, true, true);
return true;
}
@Override
public boolean visit(NormalAnnotation node) {
handleAnnotation(node, true);
handleCommas(node.values(), this.options.insert_space_before_comma_in_annotation,
this.options.insert_space_after_comma_in_annotation);
return true;
}
@Override
public boolean visit(MemberValuePair node) {
handleToken(node, TokenNameEQUAL, this.options.insert_space_before_assignment_operator,
this.options.insert_space_after_assignment_operator);
return true;
}
@Override
public boolean visit(SingleMemberAnnotation node) {
handleAnnotation(node, true);
return true;
}
@Override
public boolean visit(MarkerAnnotation node) {
handleAnnotation(node, false);
return true;
}
private void handleAnnotation(Annotation node, boolean handleParenthesis) {
handleToken(node, TokenNameAT, false, this.options.insert_space_after_at_in_annotation);
if (handleParenthesis) {
handleToken(node, TokenNameLPAREN, this.options.insert_space_before_opening_paren_in_annotation,
this.options.insert_space_after_opening_paren_in_annotation);
if (this.options.insert_space_before_closing_paren_in_annotation)
this.tm.lastTokenIn(node, TokenNameRPAREN).spaceBefore();
}
ASTNode parent = node.getParent();
boolean skipSpaceAfter = parent instanceof Annotation || parent instanceof MemberValuePair
|| (parent instanceof AnnotationTypeMemberDeclaration
&& ((AnnotationTypeMemberDeclaration) parent).getDefault() == node)
|| parent instanceof ArrayInitializer;
if (!skipSpaceAfter)
this.tm.lastTokenIn(node, -1).spaceAfter();
}
@Override
public boolean visit(LambdaExpression node) {
handleToken(node, TokenNameARROW, this.options.insert_space_before_lambda_arrow,
this.options.insert_space_after_lambda_arrow);
List parameters = node.parameters();
if (node.hasParentheses()) {
if (handleEmptyParens(node, this.options.insert_space_between_empty_parens_in_method_declaration)) {
handleToken(node, TokenNameLPAREN,
this.options.insert_space_before_opening_paren_in_method_declaration, false);
} else {
handleToken(node, TokenNameLPAREN,
this.options.insert_space_before_opening_paren_in_method_declaration,
this.options.insert_space_after_opening_paren_in_method_declaration);
handleTokenBefore(node.getBody(), TokenNameRPAREN,
this.options.insert_space_before_closing_paren_in_method_declaration, false);
}
handleCommas(parameters, this.options.insert_space_before_comma_in_method_declaration_parameters,
this.options.insert_space_after_comma_in_method_declaration_parameters);
}
return true;
}
@Override
public boolean visit(Block node) {
handleSemicolon(node.statements());
ASTNode parent = node.getParent();
if (parent.getLength() == 0)
return true; // this is a fake block created by parsing in statements mode
if (parent instanceof MethodDeclaration)
return true; // spaces handled in #visit(MethodDeclaration)
handleToken(node, TokenNameLBRACE, this.options.insert_space_before_opening_brace_in_block, false);
if (this.options.insert_space_after_closing_brace_in_block
&& (parent instanceof Statement || parent instanceof CatchClause)) {
int closeBraceIndex = this.tm.lastIndexIn(node, TokenNameRBRACE);
this.tm.get(closeBraceIndex).spaceAfter();
}
return true;
}
@Override
public boolean visit(IfStatement node) {
handleToken(node, TokenNameLPAREN, this.options.insert_space_before_opening_paren_in_if,
this.options.insert_space_after_opening_paren_in_if);
Statement thenStatement = node.getThenStatement();
int closingParenIndex = this.tm.firstIndexBefore(thenStatement, TokenNameRPAREN);
handleToken(this.tm.get(closingParenIndex), this.options.insert_space_before_closing_paren_in_if,
/* space before then statement may be needed if it will stay on the same line */
!(thenStatement instanceof Block) && !this.tm.get(closingParenIndex + 1).isComment());
if (thenStatement instanceof Block && this.tm.isGuardClause((Block) thenStatement)) {
handleToken(thenStatement, TokenNameLBRACE, false, true);
this.tm.lastTokenIn(node, TokenNameRBRACE).spaceBefore();
}
handleSemicolon(thenStatement);
return true;
}
@Override
public boolean visit(ForStatement node) {
handleToken(node, TokenNameLPAREN, this.options.insert_space_before_opening_paren_in_for,
this.options.insert_space_after_opening_paren_in_for);
handleTokenBefore(node.getBody(), TokenNameRPAREN,
this.options.insert_space_before_closing_paren_in_for, false);
handleCommas(node.initializers(), this.options.insert_space_before_comma_in_for_inits,
this.options.insert_space_after_comma_in_for_inits);
handleCommas(node.updaters(), this.options.insert_space_before_comma_in_for_increments,
this.options.insert_space_after_comma_in_for_increments);
boolean part1Empty = node.initializers().isEmpty();
boolean part2Empty = node.getExpression() == null;
boolean part3Empty = node.updaters().isEmpty();
handleToken(node, TokenNameSEMICOLON, this.options.insert_space_before_semicolon_in_for && !part1Empty,
this.options.insert_space_after_semicolon_in_for && !part2Empty);
handleTokenBefore(node.getBody(), TokenNameSEMICOLON,
this.options.insert_space_before_semicolon_in_for && !part2Empty,
this.options.insert_space_after_semicolon_in_for && !part3Empty);
return true;
}
@Override
public boolean visit(VariableDeclarationExpression node) {
ASTNode parent = node.getParent();
if (parent instanceof ForStatement) {
handleCommas(node.fragments(), this.options.insert_space_before_comma_in_for_inits,
this.options.insert_space_after_comma_in_for_inits);
} else if (parent instanceof ExpressionStatement) {
handleCommas(node.fragments(), this.options.insert_space_before_comma_in_multiple_local_declarations,
this.options.insert_space_after_comma_in_multiple_local_declarations);
}
this.tm.firstTokenAfter(node.getType(), -1).spaceBefore();
return true;
}
@Override
public boolean visit(EnhancedForStatement node) {
handleToken(node, TokenNameLPAREN, this.options.insert_space_before_opening_paren_in_for,
this.options.insert_space_after_opening_paren_in_for);
handleTokenBefore(node.getBody(), TokenNameRPAREN,
this.options.insert_space_before_closing_paren_in_for, false);
handleTokenAfter(node.getParameter(), TokenNameCOLON, this.options.insert_space_before_colon_in_for,
this.options.insert_space_after_colon_in_for);
return true;
}
@Override
public boolean visit(MethodInvocation node) {
handleTypeArguments(node.typeArguments());
handleInvocation(node, node.getName());
handleCommas(node.arguments(), this.options.insert_space_before_comma_in_method_invocation_arguments,
this.options.insert_space_after_comma_in_method_invocation_arguments);
return true;
}
@Override
public boolean visit(SuperMethodInvocation node) {
handleTypeArguments(node.typeArguments());
handleInvocation(node, node.getName());
handleCommas(node.arguments(), this.options.insert_space_before_comma_in_method_invocation_arguments,
this.options.insert_space_after_comma_in_method_invocation_arguments);
return true;
}
@Override
public boolean visit(ClassInstanceCreation node) {
List typeArguments = node.typeArguments();
handleTypeArguments(typeArguments);
handleInvocation(node, node.getType(), node.getAnonymousClassDeclaration());
if (!typeArguments.isEmpty()) {
handleTokenBefore(typeArguments.get(0), TokenNamenew, false, true); // fix for: newA()
}
handleCommas(node.arguments(), this.options.insert_space_before_comma_in_allocation_expression,
this.options.insert_space_after_comma_in_allocation_expression);
return true;
}
@Override
public boolean visit(ConstructorInvocation node) {
handleTypeArguments(node.typeArguments());
handleInvocation(node, node);
handleCommas(node.arguments(),
this.options.insert_space_before_comma_in_explicit_constructor_call_arguments,
this.options.insert_space_after_comma_in_explicit_constructor_call_arguments);
return true;
}
@Override
public boolean visit(SuperConstructorInvocation node) {
handleTypeArguments(node.typeArguments());
handleInvocation(node, node);
handleCommas(node.arguments(),
this.options.insert_space_before_comma_in_explicit_constructor_call_arguments,
this.options.insert_space_after_comma_in_explicit_constructor_call_arguments);
return true;
}
private void handleInvocation(ASTNode invocationNode, ASTNode nodeBeforeOpeningParen) {
handleInvocation(invocationNode, nodeBeforeOpeningParen, null);
}
private void handleInvocation(ASTNode invocationNode, ASTNode nodeBeforeOpeningParen,
ASTNode nodeAfterClosingParen) {
if (handleEmptyParens(nodeBeforeOpeningParen,
this.options.insert_space_between_empty_parens_in_method_invocation)) {
handleToken(nodeBeforeOpeningParen, TokenNameLPAREN,
this.options.insert_space_before_opening_paren_in_method_invocation, false);
} else {
handleToken(nodeBeforeOpeningParen, TokenNameLPAREN,
this.options.insert_space_before_opening_paren_in_method_invocation,
this.options.insert_space_after_opening_paren_in_method_invocation);
if (this.options.insert_space_before_closing_paren_in_method_invocation) {
Token closingParen = nodeAfterClosingParen == null
? this.tm.lastTokenIn(invocationNode, TokenNameRPAREN)
: this.tm.firstTokenBefore(nodeAfterClosingParen, TokenNameRPAREN);
closingParen.spaceBefore();
}
}
}
@Override
public boolean visit(Assignment node) {
handleOperator(node.getOperator().toString(), node.getRightHandSide(),
this.options.insert_space_before_assignment_operator,
this.options.insert_space_after_assignment_operator);
return true;
}
@Override
public boolean visit(InfixExpression node) {
String operator = node.getOperator().toString();
handleOperator(operator, node.getRightOperand(), this.options.insert_space_before_binary_operator,
this.options.insert_space_after_binary_operator);
List extendedOperands = node.extendedOperands();
for (Expression operand : extendedOperands) {
handleOperator(operator, operand, this.options.insert_space_before_binary_operator,
this.options.insert_space_after_binary_operator);
}
return true;
}
@Override
public boolean visit(PrefixExpression node) {
Operator operator = node.getOperator();
if (operator.equals(Operator.INCREMENT) || operator.equals(Operator.DECREMENT)) {
handleOperator(operator.toString(), node.getOperand(),
this.options.insert_space_before_prefix_operator,
this.options.insert_space_after_prefix_operator);
} else {
handleOperator(operator.toString(), node.getOperand(), this.options.insert_space_before_unary_operator,
this.options.insert_space_after_unary_operator);
}
return true;
}
@Override
public boolean visit(PostfixExpression node) {
if (this.options.insert_space_before_postfix_operator || this.options.insert_space_after_postfix_operator) {
String operator = node.getOperator().toString();
int i = this.tm.firstIndexAfter(node.getOperand(), -1);
while (!operator.equals(this.tm.toString(i))) {
i++;
}
handleToken(this.tm.get(i), this.options.insert_space_before_postfix_operator,
this.options.insert_space_after_postfix_operator);
}
return true;
}
private void handleOperator(String operator, ASTNode nodeAfter, boolean spaceBefore, boolean spaceAfter) {
if (spaceBefore || spaceAfter) {
int i = this.tm.firstIndexBefore(nodeAfter, -1);
while (!operator.equals(this.tm.toString(i))) {
i--;
}
handleToken(this.tm.get(i), spaceBefore, spaceAfter);
}
}
@Override
public boolean visit(ParenthesizedExpression node) {
handleToken(node, TokenNameLPAREN,
this.options.insert_space_before_opening_paren_in_parenthesized_expression,
this.options.insert_space_after_opening_paren_in_parenthesized_expression);
handleTokenAfter(node.getExpression(), TokenNameRPAREN,
this.options.insert_space_before_closing_paren_in_parenthesized_expression, false);
return true;
}
@Override
public boolean visit(CastExpression node) {
handleToken(node, TokenNameLPAREN, false, this.options.insert_space_after_opening_paren_in_cast);
handleTokenBefore(node.getExpression(), TokenNameRPAREN,
this.options.insert_space_before_closing_paren_in_cast,
this.options.insert_space_after_closing_paren_in_cast);
return true;
}
@Override
public boolean visit(IntersectionType node) {
List types = node.types();
for (int i = 1; i < types.size(); i++)
handleTokenBefore(types.get(i), TokenNameAND, this.options.insert_space_before_binary_operator,
this.options.insert_space_after_binary_operator);
return true;
}
@Override
public boolean visit(ConditionalExpression node) {
handleTokenBefore(node.getThenExpression(), TokenNameQUESTION,
this.options.insert_space_before_question_in_conditional,
this.options.insert_space_after_question_in_conditional);
handleTokenBefore(node.getElseExpression(), TokenNameCOLON,
this.options.insert_space_before_colon_in_conditional,
this.options.insert_space_after_colon_in_conditional);
return true;
}
@Override
public boolean visit(ArrayType node) {
ASTNode parent = node.getParent();
boolean spaceBeofreOpening, spaceBetween;
if (parent instanceof ArrayCreation) {
spaceBeofreOpening = this.options.insert_space_before_opening_bracket_in_array_allocation_expression;
spaceBetween = this.options.insert_space_between_empty_brackets_in_array_allocation_expression;
} else {
spaceBeofreOpening = this.options.insert_space_before_opening_bracket_in_array_type_reference;
spaceBetween = this.options.insert_space_between_brackets_in_array_type_reference;
}
List dimensions = node.dimensions();
for (Dimension dimension : dimensions) {
handleToken(dimension, TokenNameLBRACKET, spaceBeofreOpening, false);
handleEmptyBrackets(dimension, spaceBetween);
}
return true;
}
@Override
public boolean visit(ArrayAccess node) {
handleTokenBefore(node.getIndex(), TokenNameLBRACKET,
this.options.insert_space_before_opening_bracket_in_array_reference,
this.options.insert_space_after_opening_bracket_in_array_reference);
handleTokenAfter(node.getIndex(), TokenNameRBRACKET,
this.options.insert_space_before_closing_bracket_in_array_reference, false);
return true;
}
@Override
public boolean visit(ArrayCreation node) {
List dimensions = node.dimensions();
for (Expression dimension : dimensions) {
handleTokenBefore(dimension, TokenNameLBRACKET, false,
this.options.insert_space_after_opening_bracket_in_array_allocation_expression);
handleTokenAfter(dimension, TokenNameRBRACKET,
this.options.insert_space_before_closing_bracket_in_array_allocation_expression, false);
}
return true;
}
@Override
public boolean visit(ArrayInitializer node) {
int openingBraceIndex = this.tm.firstIndexIn(node, TokenNameLBRACE);
int closingBraceIndex = this.tm.lastIndexIn(node, TokenNameRBRACE);
Token lastToken = this.tm.get(closingBraceIndex - 1);
if (lastToken.tokenType == TokenNameLBRACE) {
handleToken(this.tm.get(openingBraceIndex),
this.options.insert_space_before_opening_brace_in_array_initializer
&& !(node.getParent() instanceof ArrayInitializer)
&& !(node.getParent() instanceof SingleMemberAnnotation),
this.options.insert_space_between_empty_braces_in_array_initializer);
} else {
boolean endsWithComma = lastToken.tokenType == TokenNameCOMMA;
handleToken(this.tm.get(openingBraceIndex),
this.options.insert_space_before_opening_brace_in_array_initializer
&& !(node.getParent() instanceof ArrayInitializer)
&& !(node.getParent() instanceof SingleMemberAnnotation),
this.options.insert_space_after_opening_brace_in_array_initializer
&& !(endsWithComma && node.expressions().isEmpty()));
handleCommas(node.expressions(), this.options.insert_space_before_comma_in_array_initializer,
this.options.insert_space_after_comma_in_array_initializer);
if (endsWithComma) {
handleToken(lastToken, this.options.insert_space_before_comma_in_array_initializer,
false); //this.options.insert_space_after_comma_in_array_initializer);
}
handleToken(this.tm.get(closingBraceIndex),
this.options.insert_space_before_closing_brace_in_array_initializer
&& !(endsWithComma && node.expressions().isEmpty()), false);
}
return true;
}
@Override
public boolean visit(ParameterizedType node) {
List typeArguments = node.typeArguments();
boolean hasArguments = !typeArguments.isEmpty();
handleTokenAfter(node.getType(), TokenNameLESS,
this.options.insert_space_before_opening_angle_bracket_in_parameterized_type_reference,
hasArguments && this.options.insert_space_after_opening_angle_bracket_in_parameterized_type_reference);
if (hasArguments) {
handleTokenAfter(typeArguments.get(typeArguments.size() - 1), TokenNameGREATER,
this.options.insert_space_before_closing_angle_bracket_in_parameterized_type_reference, false);
handleCommas(node.typeArguments(),
this.options.insert_space_before_comma_in_parameterized_type_reference,
this.options.insert_space_after_comma_in_parameterized_type_reference);
}
return true;
}
@Override
public boolean visit(TypeParameter node) {
List typeBounds = node.typeBounds();
for (int i = 1; i < typeBounds.size(); i++) {
handleTokenBefore(typeBounds.get(i), TokenNameAND,
this.options.insert_space_before_and_in_type_parameter,
this.options.insert_space_after_and_in_type_parameter);
}
return true;
}
@Override
public boolean visit(WildcardType node) {
handleToken(node, TokenNameQUESTION, this.options.insert_space_before_question_in_wilcard,
this.options.insert_space_after_question_in_wilcard || node.getBound() != null);
return true;
}
@Override
public boolean visit(UnionType node) {
List types = node.types();
for (int i = 1; i < types.size(); i++)
handleTokenBefore(types.get(i), TokenNameOR, this.options.insert_space_before_binary_operator,
this.options.insert_space_after_binary_operator);
return true;
}
@Override
public boolean visit(Dimension node) {
List annotations = node.annotations();
if (!annotations.isEmpty())
handleToken(annotations.get(0), TokenNameAT, true, false);
return true;
}
@Override
public boolean visit(TypeMethodReference node) {
handleTypeArguments(node.typeArguments());
return true;
}
@Override
public boolean visit(ExpressionMethodReference node) {
handleTypeArguments(node.typeArguments());
return true;
}
@Override
public boolean visit(SuperMethodReference node) {
handleTypeArguments(node.typeArguments());
return true;
}
@Override
public boolean visit(CreationReference node) {
handleTypeArguments(node.typeArguments());
return true;
}
private void handleTypeArguments(List typeArguments) {
if (typeArguments.isEmpty())
return;
handleTokenBefore(typeArguments.get(0), TokenNameLESS,
this.options.insert_space_before_opening_angle_bracket_in_type_arguments,
this.options.insert_space_after_opening_angle_bracket_in_type_arguments);
handleTokenAfter(typeArguments.get(typeArguments.size() - 1), TokenNameGREATER,
this.options.insert_space_before_closing_angle_bracket_in_type_arguments,
this.options.insert_space_after_closing_angle_bracket_in_type_arguments);
handleCommas(typeArguments, this.options.insert_space_before_comma_in_type_arguments,
this.options.insert_space_after_comma_in_type_arguments);
}
@Override
public boolean visit(InstanceofExpression node) {
handleTokenAfter(node.getLeftOperand(), TokenNameinstanceof, true, true);
return true;
}
private void handleCommas(List nodes, boolean spaceBefore, boolean spaceAfter) {
if (spaceBefore || spaceAfter) {
for (int i = 1; i < nodes.size(); i++) {
handleTokenBefore(nodes.get(i), TokenNameCOMMA, spaceBefore, spaceAfter);
}
}
}
private void handleToken(ASTNode node, int tokenType, boolean spaceBefore, boolean spaceAfter) {
if (spaceBefore || spaceAfter) {
Token token = this.tm.get(this.tm.findIndex(node.getStartPosition(), tokenType, true));
// ^not the same as "firstTokenIn(node, tokenType)" - do not assert the token is inside the node
handleToken(token, spaceBefore, spaceAfter);
}
}
private void handleTokenBefore(ASTNode node, int tokenType, boolean spaceBefore, boolean spaceAfter) {
if (spaceBefore || spaceAfter) {
Token token = this.tm.firstTokenBefore(node, tokenType);
handleToken(token, spaceBefore, spaceAfter);
}
}
private void handleTokenAfter(ASTNode node, int tokenType, boolean spaceBefore, boolean spaceAfter) {
if (spaceBefore || spaceAfter) {
if (tokenType == TokenNameGREATER) {
// there could be ">>" or ">>>" instead, get rid of them
int index = this.tm.lastIndexIn(node, -1);
for (int i = index; i < index + 2; i++) {
Token token = this.tm.get(i);
if (token.tokenType == TokenNameRIGHT_SHIFT || token.tokenType == TokenNameUNSIGNED_RIGHT_SHIFT) {
this.tm.remove(i);
for (int j = 0; j < (token.tokenType == TokenNameRIGHT_SHIFT ? 2 : 3); j++) {
this.tm.insert(i + j, new Token(token.originalStart + j, token.originalStart + j,
TokenNameGREATER));
}
}
}
}
Token token = this.tm.firstTokenAfter(node, tokenType);
handleToken(token, spaceBefore, spaceAfter);
}
}
private void handleToken(Token token, boolean spaceBefore, boolean spaceAfter) {
if (spaceBefore)
token.spaceBefore();
if (spaceAfter)
token.spaceAfter();
}
private boolean handleEmptyParens(ASTNode nodeBeforeParens, boolean insertSpace) {
int openingIndex = this.tm.findIndex(nodeBeforeParens.getStartPosition(), TokenNameLPAREN, true);
if (this.tm.get(openingIndex + 1).tokenType == TokenNameRPAREN) {
if (insertSpace)
this.tm.get(openingIndex).spaceAfter();
return true;
}
return false;
}
private boolean handleEmptyBrackets(ASTNode nodeContainingBrackets, boolean insertSpace) {
int openingIndex = this.tm.firstIndexIn(nodeContainingBrackets, TokenNameLBRACKET);
if (this.tm.get(openingIndex + 1).tokenType == TokenNameRBRACKET) {
if (insertSpace)
this.tm.get(openingIndex).spaceAfter();
return true;
}
return false;
}
private void handleSemicolon(ASTNode node) {
if (this.options.insert_space_before_semicolon) {
Token lastToken = this.tm.lastTokenIn(node, -1);
if (lastToken.tokenType == TokenNameSEMICOLON)
lastToken.spaceBefore();
}
}
private void handleSemicolon(List nodes) {
if (this.options.insert_space_before_semicolon) {
for (ASTNode node : nodes)
handleSemicolon(node);
}
}
public void finishUp() {
this.tm.traverse(0, new TokenTraverser() {
boolean isPreviousJIDP = false;
@Override
protected boolean token(Token token, int index) {
// put space between consecutive keywords, numbers or identifiers
char c = SpacePreparator.this.tm.charAt(token.originalStart);
boolean isJIDP = ScannerHelper.isJavaIdentifierPart(c);
if ((isJIDP || c == '@') && this.isPreviousJIDP)
getPrevious().spaceAfter();
this.isPreviousJIDP = isJIDP;
switch (token.tokenType) {
case TokenNamePLUS:
if (getNext().tokenType == TokenNamePLUS || getNext().tokenType == TokenNamePLUS_PLUS)
token.spaceAfter();
break;
case TokenNameMINUS:
if (getNext().tokenType == TokenNameMINUS || getNext().tokenType == TokenNameMINUS_MINUS)
token.spaceAfter();
break;
}
return true;
}
});
}
}
